Gideon Marcus

Gideon Marcus was a captain of the Canadian RCMP force during Prohibition. In 1930, in conjunction with the US Department of the Treasury, he launched an ambush of a whiskey shipment on the US-Canada border at Montana as Chicago Outfit mobsters headed to receive it. Marcus diverted from Eliot Ness' plan by leading a surprise cavalry charge against the mobsters, successfully killing most of them and confiscating the shipment; however, he disagreed with Ness and Jimmy Malone's hard-boiled methods (such as the shooting of the dead Gallicano Calandra to intimidate George Moretti).